The Hadoop ecosystem is crammed full of software, much of which duplicates efforts, and much of which is named so similarly that it’s very confusing for newcomers. If you’re new to Hadoop, this guide is perfect to help you get familiar. This time around, we’ll get into more of the peripheral, optional components that might be useful to you.

A look at the practicalities of scaling a Node app across multiple instances that can be on multiple servers using Redis as a back-end messaging system. The techniques came out of actual work on a real MMORPG.